cleanup venv handling

Author: jourdain

05_paraview/venv.py

@@ -1,17 +1,23 @@
+# -*- coding: utf-8 -*-
+"""Activate venv for current interpreter:
+
+Use `import venv` along with a `--venv path/to/venv/base`
+
+This can be used when you must use an existing Python interpreter, not the venv bin/python.
+"""
 import os
 import site
 import sys
 
 if "--venv" in sys.argv:
-    # Code taken from virutal-env::bin/active_this.py
+    # Code inspired by virutal-env::bin/active_this.py
     venv_path = sys.argv[sys.argv.index("--venv") + 1]
     bin_dir = os.path.abspath(os.path.join(venv_path, "bin"))
     base = bin_dir[: -len("bin") - 1]
     os.environ["PATH"] = os.pathsep.join([bin_dir] + os.environ.get("PATH", "").split(os.pathsep))
     os.environ["VIRTUAL_ENV"] = base
     prev_length = len(sys.path)
     python_libs = os.path.join(base, f"lib/python{sys.version_info.major}.{sys.version_info.minor}/site-packages")
-    path = os.path.realpath(os.path.join(bin_dir, python_libs))
     site.addsitedir(python_libs.decode("utf-8") if "" else python_libs)
     sys.path[:] = sys.path[prev_length:] + sys.path[0:prev_length]
     sys.real_prefix = sys.prefix